Pressure Reducing City Water Entry In-Line Cream. This combination pressure reducing city water entry and check valve diaphragm design prevents high-pressure damage often caused by city water systems. This high performance water entry limits water pressure safely to 50 PSI while meeting or surpassing all check valve code requirements. This in-line pressure reducing water entry includes a check valve. 3/4 GSH Female swivel inlet. 1/2 NPSM Male Outlet. Features Small size, easy installation. Continuous protection from high pressure surges. Hose mounting eliminates need for permanent installation. Fits standard 3/4 hose fittings. Built-in check valve. 50 PSI This combination pressure reducing city water entry and check valve diaphragm design prevents high- Small size, easy installation. Continuous protection from high pressure surges Hose mounting eliminates need for permanent installation. Fits standard 3/4 hose fittings Built-in check valve. 50 PSI